Carbureter.



No. 744,877. PATENTED NOV. 24, 1903.

E. D. PARROTT. GARBURETER.

APPLIOATION FILED APR. 15. 1903.

N0 MODEL.

inrrnn dramas Patented November 24, 1903.

arnmtr (Cleric a G CARBURETER.

sSPEGIFIGATION forming part of Letters Patent No. 744,877, datedNovember 24, 1903.

Application filed April 1 5, 1 90 3,

Serial No, 152,783. (No model.)

To rtZZ whom it may concern:

Be it known that I, ELIJAH D. PARROTT, a

citizen of the United States, residing at Portland, in the countyof'Multnomah and State of Oregon, have invented a new and usefulCarburetor, of which the following is a speci fication.

This invention relates to certain improvements in devices formanufacturing illumihating and fuel gas from gasolene or similar providefor the more even distribution of the current of air so that allportions of the latter will be subjected to the liquid, and thus avoidannoyance from the noise caused by the bubbling of the air as it passesin large quantities or streams through the liquid.

A still further object of the invention is to provide a construction ofcarburetor in which freezing and consequent failure of the apparatusfrom the reduction'of temperature, due to evaporation of the gasolene,is entirely avoided.

A still further object of the invention is to provide a device of thischaracter in'which provision is made for separating the gasolene fromany water which may be contained therein, the presence of waterconsiderably lessening the effectiveness of carburetors as ordinarilyarranged and constructed.

WVith these and other objects in view the invention consists in thenovel construction and arrangement of parts hereinafter described,illustrated in the accompanying drawings, and particularly pointed outin the appended claims, it being understood that various changes in theform, proportions, size, and minor details of the structure may be madewithout departing from the spirit or sacrificing any of the advantagesof the invention.

In the accompanying drawings, Figure 1 is a sectional elevation of acarbnreting apparatus constructed in accordance with the inchamber 2.

vention. Fig. 2 is a detail perspective view looking from the lower sideof the perforated airdistributing disk in the carburetingchamber.

Similar numerals of reference designate corresponding parts throughoutboth figures of the drawings.

1 indicates a tank or reservoir for the reception of the gasolene orother hydrocarbon, said tank being disposed at any convenient point, butfor convenience being generally arranged immediately above thecarbureting- At one side or end of the tank 1 is a filling-chamber 3,separated from the main tank by a partition 4, having an inclined lowerportion 4: in order to reduce the area at the lowest point of thechamber and to permit the withdrawal of the entire contents thereofthrough a dischargecock 5. Immediately over the fillingchamber the tankis provided with a lilling-opening6,no1'- mally closed by a threadedplug or cap 7, and on the removal of the latter the gasolene may bepoured into the filling-chamber and thence flow by gravity through anopening 8 into the tank proper. The filling operation should beaccomplished slowly in order that any Water which may be contained inthe gasolene may separate therefrom by reason of its greater specificgravity and sink to the lower portion of the filling-chamber, to bethence withdrawn through the dischargecock 5, as occasion may require.

The carbureting-tank 2 is of any suitable size and shape and isconnected to the reservoir by a pipe 10, the discharge end of said pipebeing arranged close to the bottom of the carbureting-tank, so that theentering gasolene may be thoroughly intermingled with any gasolenealready in the carburetor. The pipe 10 has a coupling member 11, fromwhich depends a short pipe-section 12, having a removable cap 13,whichmay be taken off should it be desired to withdraw the contents of themain reservoir or to remove an obstruction in the pipe, and thispipe-section also serves as an auxiliary reservoir for the accumulationof water.

In the carbureting-tank is a preferably circular float 15 in the form ofa hollow cylinder, to the lower portion of which is secured anair-distributing disk 16, having at its outer ICO edge a dependingflange 17. Through a central portion of the disk and float extends avertical casing 18, open at the bottom and closed at the top and formingan air-passage to which air is supplied through an inlet-pipe 19,discharging at the upper portion of the casing 18. At the entrance endof the inlet-pipe are a number of perforations20,extending,preferably,tl1rough the threaded end portion of thepipe,and on said threaded portion is arranged a cap 21, which may beturned to close or partly close any desired number or all of theperforations, and thus regulate the quantity of air admitted to thecarburetor.

The lower portion of the distributing-disk 16 is provided with a largenumber of radiating-ribs 22,which are deeper at the inner than at theouter end and form a plurality of radiating-passages in order to dividethe current of air into minute streams, and thus insure contact of allportions of the air with the gasolene, the air becoming thoroughlysaturated, and at the same time there is less annoyance from the noisecaused by the gurgling and bubbling of large bodies of air under thedisk. The central portion of the disk beyond the casing 18 is solid, sothat the air is compelled to travel for a considerable distance belowthe surface of the gasolene. The outer portion of the disk beyond thefloat is perforated to permit the saturated air to escape to the surfaceof the liquid and accumulate in the upper portion of thecarbureting-tank,and in the event of the passage of air beyond theperforations its direct escape in large volume from the edge of the diskis prevented, owing to the flange 19, and said flange is provided with anumber of small perforations in order to subdivide the current of airbefore allowing its passage to the surface of the liquid.

In devices of this class it has been found that rapid evaporation of thegasolene or its absorption by the air immediately around the airinletcauses a rapid reduction in the temperature at this point,and in case ofmoisture in the air there Will be an accumulation of frost on the innerwall of the air-pipe, resulting in the gradual choking of the air-supplypipe and partial or complete failure of the apparatus. To overcome thisdifficulty, the air-pipe is surrounded by a protecting-tube 25 in orderto form an air-space between the air-tube and the liquid, and this tubeserves effectively to prevent the choking of the airsupply pipe from thecause mentioned.

In the gasolene-inlet pipe 10 there is arranged a valve 26, and the stemof said valve is connected by an arm 27 to the verticallymovable casin g18, carried by the float, the arrangement being such that as the floatdescends, owing to the absorption of the gasolene in the tank, the valvewill be opened to replenish the supply, and when the normal level hasbeen reached the valve will be immediately' closed. This arrangement issuch as to automatically preserve a constantlevel of gasolene in thecarbureting-tank.

Having thus described the invention, what is claimed is 1. In anapparatus of the class described, a carbureting-tank, a float arrangedwithin the same, an air-distributing disk carried by the float andextending beyond the outer edge of the same, said disk being perforated'at a point beyond the air-entrance point and having on itslowersurfacea plurality of radiallyarranged. ribs for dividing anddistributing the air.

2. In an apparatus of the class described, the combination with acarbureting-tank, of a float, a diskof greater diameter than the floatand havingan imperforate portion Within the lines of the float, theouter portion of said disk being perforated and having a pendentperforated flange in its outer edge, and means for supplying air to thecentral portion of said disk.

3. In a device of the class described, a car bureting-tank, an air-inletpipe, an air-distributing disk, a float of which the disk forms a part,a vertically-disposed hood or casing carried by the float and disk andcovering the air-inlet pipe, said disk being provided with a pluralityof radiating-ribs to divide and distribute the air during its passagethrough the hydrocarbon.

4. In an apparatus of the class described, an air-distributing diskhaving on its lower face a plurality of radiating ribs of agradually-decreasing depth toward the periphery of the disk, and meansfor supporting saiddisk in position below the surface of a body ofhydrocarbon.

5. In adevice of the class specified, the combination with anair-entrance pipe, of an air-distributing disk, means for supporting thesame below thelevel of a body of hydrocarbon, a hood or casing coveringthe air-entrance pipe, and a secondary protecting-tube surrounding andspaced from the airentrance pipe, substantially as specified.

6. In a device of the class specified, the combination with acarbureting-tank for containing a body of hydrocarbon, of anair-entrance pipe, a protecting-tube surrounding and spaced from thepipe, a ribbed air-distributing disk provided at its outer end with adepending perforated flange, a float of which the disk forms a part, anda hood or casing carried by the float and disk and covering theair-entrance pipe.

ELIJAH D. PARROTT.

Witnesses:

JOSEPH MANAGHAN, J. M. BENNETT.

